Variety of Hydrangea plant named ‘Stramalyn’

ABSTRACT

A new and distinct  Hydrangea  plant having pink-colored flowers and black-colored, strong stems.

Botanical classification: Hydrangea macrophylla.

Varietal denomination: ‘STRAMALYN’.

BACKGROUND OF THE INVENTION

The present invention comprises a new and distinct cultivar of Hydrangea plant known by the varietal name ‘Stramalyn’. The new variety was discovered in 2003 in a planned breeding program in Salgen-Hausen, Germany. The purpose of the breeding program was to develop Hydrangeas with improved flower colors and black stems. The new variety is the result of a cross between breeding selection 533/8 (female parent, unpatented) and ‘Venice Raven’ (male parent, U.S. Plant Pat. No. 10,928, also referred to as Venedig). The black stem color of ‘Stramalyn’ is similar to its female parent, but it differs from 533/8 in flower color. The flowers of ‘Stramalyn’ are similar to ‘Venice Raven’, but its leaf shape, black stem and pink flower color are different from ‘Venice Raven’. The new variety was first asexually reproduced in 2004 via propagation by cuttings in Salgen-Hausen, Germany. The new variety has been trial and field tested in Germany and has been found to retain its distinctive characteristics and remain true to type through successive propagations.

The following traits distinguish ‘Stramalyn’ as a new and distinct cultivar from other Hydrangea varieties known to the breeder:

-   -   1. Black stem color instead of green stem color;     -   2. Pink flower color;     -   3. Frost resistance;     -   4. Stem strength; and     -   5. Mold resistance, such as botrytis.

‘Stramalyn’ is similar to another Hydrangea variety, ‘Stramadschi’ (United States Plant Patent Application concurrently applied for), because they both have black stems that are strong. However, ‘Stramalyn’ differs from ‘Stramadschi’ in flower color.

DESCRIPTION OF THE DRAWINGS

The accompanying photographic drawings illustrate the new variety, with the color being as nearly true as is possible with color illustrations of this type:

FIG. 1 is photograph of an entire plant of the new variety; and

FIG. 2 is a close-up photograph of the stems of the new variety.

DESCRIPTION OF THE PLANT

The following detailed description sets forth characteristics of the new cultivar. The plants were grown in 15 cm. pots, 8 per m², in ordinary potting soil with granulated fertilizers at a pH of 6.0. The plants were two years old when described. Measurements and color readings of the plants were taken in Salgen-Hausen, Germany under natural light. Color references are primarily to the HTML Color Chart.

PLANT

-   Time to initiate roots: About 14 days at 22° C. -   Time to develop roots: About 18 days at 18-20° C. -   Rooting habit: Moderate. -   Time to produce a finished flowering plant from a rooted cutting:     About 48 weeks in a 15 cm. container. -   Form: Mounded. -   Height (from media surface to top of foliage): 45.0-50.0 cm. -   Height (from media surface to top of flowers): 50.0-55.0 cm. -   Plant diameter: 35.0 cm. -   Vigor: Good. -   Strength: Good. -   Branching habit: Moderately-branched. -   Trunk:     -   -   Main trunk length.—10.0 cm.         -   Diameter.—1.0 cm.         -   Color.—Black.         -   Texture.—Shiny.         -   Pubescence.—Absent.         -   Internode length.—1.5-2.0 cm. -   Lateral branches:     -   -   Length.—Young: 40.0 cm. Mature: 10.0 cm.         -   Diameter.—Young: 0.5 cm. Mature: 0.5 cm.         -   Internode length.—7.0-8.0 cm.         -   Texture.—Shiny.         -   Pubescence.—Absent.         -   Color.—Young: Chartreuse 7F FF 00. Mature: Dark Green 00 64             00. -   Foliage:     -   -   Arrangement.—Single.         -   Stipules.—Length: 5.0 cm. Width: 3.5 cm. Color: Forest Green             22 8B 22.         -   Zone.—Location: Bottom of the media. Color: Green.         -   Size of leaf.—Length: 8.0 cm. Width: 4.5 cm.         -   Shape of leaf (generally).—Young: Dentate and serrate.             Mature: Dentate and serrate.         -   Shape of apex.—Lanceolate and attenuate.         -   Shape of base.—Round.         -   Texture.—Shiny.         -   Aspect.—V-formed.         -   Margin type.—Ball.         -   Pubescence.—None present.         -   Color.—Young leaves: Upper surface: Forest Green 22 8B 22.             Lower surface: Forest Green 22 8B 22. Mature leaves: Upper             surface: Dark Green 00 64 00. Lower surface: Dark Green 00             64 00.         -   Petiole.—Shape: Square. Length: 1.5 cm. Diameter: 1.5 cm.             Color: Pink.         -   Veins.—Color: Upper surface: Pink FF C0 CB. Lower surface:             Pink FF C0 CB.

FLOWER

-   Natural flowering season: May through September in Ermelo, The     Netherlands. -   Blooming habit: Early blooming and continuous. -   Bud:     -   -   Stage of development when described.—At a budsize of 3.0 cm.         -   Shape of cluster.—Round.         -   Diameter of cluster.—10.0 cm.         -   Number of buds per cluster.—Approximately 50.         -   Shape.—Ball.         -   Length.—2.0 mm.         -   Width.—1.0 mm. -   Inflorescence:     -   -   Shape.—Round.         -   Length.—12.0 cm.         -   Diameter.—12.0 cm.         -   Average number of flowers per inflorescence.—3-4.         -   Lastingness of an individual flower.—6 to 8 weeks.         -   Lastingness of an inflorescence.—6 to 8 weeks. -   Petals:     -   -   Number per flower.—4.         -   Color.—Upper surface: Light Pink FF B6 01. Lower surface:             Light Pink FF B6 01.         -   Shape.—Square.         -   Length.—1.5 cm.         -   Width.—1.5 cm.         -   Apex.—Lanceolate and attenuate.         -   Base.—Round.         -   Margin.—Erect.         -   Texture.—Shiny.         -   Tonality from a distance.—Full. -   Sepals:     -   -   Number per flower.—4.         -   Color.—Green 22 8B 22.         -   Shape.—Lanceolate and attenuate.         -   Length.—3.0 mm.         -   Width.—1.5 mm.         -   Apex.—Lanceolate and attenuate.         -   Base.—Triangular.         -   Margin.—Erect.         -   Texture.—Shiny.         -   Fused.—No. -   Petaloids:     -   -   Quantity.—4.         -   Shape.—Round.         -   Length.—2.0 mm.         -   Width.—1.0 mm.         -   Color.—Upper surface: White FF FA F0. Lower surface: White             FF FA F0. -   Pedicels:     -   -   Length.—1.0 cm.         -   Diameter.—1.0 mm.         -   Color.—Firebrick B2 22 22. -   Peduncles:     -   -   Length.—2.0 to 3.0 cm.         -   Diameter.—3.0 mm.         -   Texture.—Shiny.         -   Color.—Green 00 64 00. -   Stamens:     -   -   Number per fertile flower.—10.         -   Filament.—Length: 3.0 to 6.0 mm. Color: White FF FA F0.         -   Anthers.—Shape: Elongated oval. Length: 2.0 to 3.0 mm.             Color: White FF FA F0.         -   Pollen.—Color: Yellow FF FF 00. Amount: Abundant. -   Pistils:     -   -   Number.—1.         -   Length.—5.0 mm.         -   Style.—Length: 5.0 mm. Color: White FF FA F0.         -   Stigma.—Number: 1. Shape: Compact. Color: Yellow FF FF 00.             Size: 0.5 cm².         -   Ovaries (superior).—Length: 1.5 mm. Width: 1.5 mm. Color:             Yellow FF FF 00. -   Fragrance: None observed. -   Disease resistance: Tolerant to botrytis and powdery mildew. -   Temperature tolerance: Very good. -   Drought tolerance: Medium. 

1. A new and distinct variety of Hydrangea plant substantially as shown and described herein. 